why would I want to increase control/reach of the state
Socialism =/= statism. It's like I'm banging my head against a wall here. Leave this weird left-right paradigm for a sec.
why isn't it being practiced today?
Profits. Control. The West's long history of suppressing leftist movements. Still, you see bits of labor's successes in things such as the movement to reduce labor hours (to which each time there was a victory, capitalists introduced improved machinery, just as Marx predicted), which really peaked before WW2.
Has said system been successfully implemented on a large scale?
Larger than local/regional? No. But this doesn't mean we shouldn't try and move in that direction. And it's VERY silly to ignore the upper hand capital has/has had in creating external conflict, beating proletarian attempts down.
You have yet to explain why this is a move in the right direction
"Jobs", food, energy - all artificially kept scarce to keep profit high. (This is immoral to answer the thread, btw and actually
limits the individual freedom you libertarians love so much). Contrast this with how bloated hours of labor are in modern times, and how many things that need to be done that never or take forever to get done because of the profit motive.
To run with the food/famine bit, if we have enough food already and the capacity to rid world hunger (abundance), (you can do this with housing too)
and the biggest roadblock is prices/artificial scarcity...
why not remove profit from the equation? Why not begin reduce labor hours to zero, embracing automation, ridding ourselves of make-work and start moving people into more meaningful labor and self-organized democratic workplaces and industries? Work that needs to be done =/= profitable work. Ending material poverty means the end of crimes of isolation and necessity, which is a move towards abolishing police and prisons (oppressive institutions that have to exist as long as capitalism exists). We can work towards ending resource scarcity that drives war and climate change. By this point, how much purpose does a state (another oppressive institution) really have left? I don't have the perfect conception of post-capitalist society, but I think we'd do far better to move there than towards this imperfect capitalist society that places profit over need. Capitalism will many of these ends on its own (like feudalism eventually gave rise to capitalism) - but very slowly, painfully and because of climate change, we may not see to the end of it. But why not accelerate into the 5th mode of production? I haven't really even dug down to frame this in a racial sense, but I'm sure you can see how the Global South is faring under this mode, even though with modern technology and distribution means there's really no excuse. I might have a better answer later though honestly.